增大点击区域

hittest.dart

import 'package:flutter/material.dart';
import 'package:oktoast/oktoast.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return OKToast(
      child: MaterialApp(
        title: 'Flutter Demo',
        theme: ThemeData(
          primarySwatch: Colors.blue,
          visualDensity: VisualDensity.adaptivePlatformDensity,
        ),
        home: MyHomePage(),
      ),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key key}) : super(key: key);

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  Widget text = const Text(
    '这是测试的文字，请勿删掉',
    maxLines: 1,
  );
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: ListView.builder(
        itemBuilder: (BuildContext c, int index) {
          return Container(
            decoration: BoxDecoration(border: Border.all(color: Colors.grey)),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.center,
              crossAxisAlignment: CrossAxisAlignment.center,
              children: <Widget>[
                Expanded(
                  child: Container(
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      crossAxisAlignment: CrossAxisAlignment.center,
                      children: <Widget>[text, text],
                    ),
                    decoration:
                        BoxDecoration(border: Border.all(color: Colors.grey)),
                  ),
                ),
                Expanded(
                    child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  crossAxisAlignment: CrossAxisAlignment.center,
                  children: <Widget>[
                    Row(
                      children: <Widget>[
                        getButton('A'),
                        Expanded(
                          child: Container(
                            color: Colors.lightGreen,
                            child: text,
                          ),
                        ),
                        getButton('B'),
                      ],
                    ),
                    text,
                  ],
                )),
                Expanded(
                  child: Container(
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      crossAxisAlignment: CrossAxisAlignment.center,
                      children: <Widget>[text, text],
                    ),
                    decoration:
                        BoxDecoration(border: Border.all(color: Colors.grey)),
                  ),
                ),
              ],
            ),
          );
        },
        itemExtent: 70,
      ),
    );
  }

  Widget getButton(String text) {
    return GestureDetector(
      onTap: () {
        showToast(text, duration: Duration(milliseconds: 500));
      },
      child: Container(
        width: 16,
        height: 16,
        alignment: Alignment.center,
        child: Text(text),
        decoration: BoxDecoration(border: Border.all(color: Colors.red)),
      ),
    );
  }
}